The principle behind a cold air intake is simple yet effective: cooler air is denser and contains more oxygen, which leads to more efficient combustion and increased power output . Factory air intake systems are often designed with noise reduction and cost efficiency in mind, utilizing convoluted tubing and restrictive paper filters that limit airflow . Aftermarket cold air intakes address these shortcomings by employing smooth, large-diameter aluminum or HDPE tubes and high-flow, reusable cotton filters . This design allows the engine to gulp larger volumes of air with less resistance.
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